The issue is the trend of people who shouldn't have kids having the most kids, and the people who should be having the most kids have the least kids.

If you have the intelligence to know that you can give yourself and your kids their best life financially by limiting yourself to two, and have the discipline to actually follow that, then you are the type of person who should have more.

If you don't have the intelligence to realize that, or don't have the discipline to act on it, then you are the type of person who should not have any.